Warwickshire Group (Pennsylvanian) red-beds of the Canonbie Coalfield, England-Scotland border, and their regional palaeogeographical implications

Jones, Neil S.; Holliday, Douglas W.; McKervey, John A.. 2011 Warwickshire Group (Pennsylvanian) red-beds of the Canonbie Coalfield, England-Scotland border, and their regional palaeogeographical implications. Geological Magazine, 148 (1). 50-77. 10.1017/S001675681000035X

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Late Carboniferous red-beds, < 700 m thick, at outcrop and in the subsurface of the Canonbie Coalfield can be assigned to the Warwickshire Group. They are preserved within the axial part of the Solway Syncline and are divisible into the Eskbank Wood, Canonbie Bridge Sandstone and Becklees Sandstone formations. Sedimentation largely took place on a well-drained alluvial plain, characterized mainly by early, primary oxidation of the strata. Large, northerly-flowing braided river systems were common, with overbank and floodplain fines deposited lateral to the channels; soils formed during intervals of low sediment aggradation. The Canonbie succession includes some of the youngest Carboniferous rocks preserved in the UK. Correlation of the Eskbank Wood Formation is equivocal, but using petrographical, heavy mineral, zircon age dating and palaeocurrent data, the Canonbie Bridge Sandstone Formation can be unambiguously correlated with the Halesowen Formation of Warwickshire, the Pennant Sandstone Formation of South Wales and the offshore Boulton Formation. This suggests that southerly-derived detritus travelled considerable distances from the Variscan highlands of Brittany and/or central Germany across the southern North Sea and UK areas, to a position some hundreds of kilometres north of that previously recognized. The Becklees Sandstone Formation has much in common with the Salop Formation of the English Midlands. It appears to have no preserved equivalent elsewhere in the UK or in the UK sector of the southern North Sea but resembles stratigraphically higher parts of the southern North Sea succession seen in the Dutch sector.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1017/S001675681000035X
Programmes: BGS Programmes 2010 > Geology and Landscape (Scotland)
ISSN: 0016-7568
Date made live: 05 Jan 2011 15:21 +0 (UTC)

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